The invention relates to a system for determining the tire condition of a vehicle tire in a vehicle, said system comprising a number of sensors, which detect measurement values (m.sub.1, m.sub.2, m.sub.3) relevant to the tire condition, and a device for recording data and transmitting data, said device having a signal connection to the sensors on the input side. According to the invention, the signal output of the device has a preferably wireless signal connection to a readout unit, and the device generates actual tire parameters on the basis of the detected measurement values (m.sub.1, m.sub.2, m.sub.3) and directs said actual tire parameters to the readout unit.

A tire inflation optimization apparatus configured to determine an optimum inflation pressure for a tire installed on an aircraft is disclosed. The apparatus includes a memory and a controller. The memory stores information relating tire gas properties to aircraft schedule parameters and a reference pressure for the tire. The controller is configured to receive future schedule information indicative of a future flight schedule for the aircraft and to determine an optimum inflation pressure for the tire based on the received future schedule information, the stored information relating tire gas properties to aircraft schedule parameters, and the stored reference pressure.

A method of determining a status of a tyre monitoring device that includes a power supply. The method includes determining a value indicative of consumption of the power supply, determining a status of the tyre monitoring device based on the value indicative of consumption of the power supply, and providing an indication based on the determined status.

An apparatus configured to determine the pressure of an aircraft tire at a reference temperature. The apparatus includes a processing system configured to: obtain a measured tire pressure and a measured temperature associated with the measured tire pressure; and determine a tire pressure at the reference temperature by adjusting the measured tire pressure using a predetermined temperature characteristic, a square root of the measured temperature and a square root of the reference temperature. The predetermined temperature characteristic is a gradient of the relationship between square root of temperature and tire pressure.

A tire parameter measurement method, device, and system of using the same are described herein. One method includes a tire air valve extension assembly with an integrated mounted pressure sensor apparatus, measuring pressure values, associating the sensor to an identification reader to receive the pressure values from the pressure sensor, and notifying a user of the measured pressure.

A method for detecting wheel units mounted at wheels of a vehicle and for detecting wheel mounting positions belonging to each of the wheel units is disclosed. The method comprises the steps of: positioning a mobile communication device at a predetermined start position with respect to the vehicle, moving the mobile communication device from the start position along a path around the vehicle, receiving RF signals from the wheel units and measuring the RF signal strengths thereof by the mobile communication device when moving along the path around the vehicle, performing an analysis of variations of the measured RF signal strengths of the received RF signals depending on the position of the mobile communication device along the path, identifying the wheel units and identifying the wheel mounting positions based on a result of the analysis.

An information display device includes an information acquisition unit configured to acquire information; a position acquisition unit configured to acquire position information indicating a position of the information display device; a determination unit configured to determine an output mode for the information acquired by the information acquisition unit based on the position information acquired by the position acquisition unit; a conversion unit configured to convert the information acquired by the information acquisition unit based on the output mode determined by the determination unit; and an output unit configured to output the information converted by the conversion unit based on the output mode determined by the determination unit. The determination unit is configured to determine, as the output mode, a display mode complying with laws and regulations applicable to the position of the information display device based on the position information.

A method for controlling an electronic valve for a tire of a motor vehicle including an electronic assembly of sensors and a bidirectional radiofrequency communication assembly, connected to the electronic assembly of sensors. This method is noteworthy in that: in a parked situation and in the effective absence of a user, the electronic assembly of sensors is kept dormant and the communication assembly is kept on standby, and on the arrival of a user, the electronic assembly of sensors is activated by the communication assembly.

A transmitter is configured to be attached to a tire valve and transmit a data signal to a receiver. The transmitter includes a trigger receiving unit configured to receive a trigger signal transmitted from an ID registration device, the trigger signal containing a command to the transmitter, a specification storage unit configured to store multiple types of specifications, an ID storing unit configured such that an ID code contained in the trigger signal received by the trigger receiving unit is written into the ID storing unit, a linking information storing unit configured to store linking information that links each of the specifications and ID codes to each other, and a controlling unit configured to cause, based on the linking information, the transmitter to operate in accordance with the specification, which is linked to the ID code stored in the ID storing unit.

This disclosure describes systems and methods for determining tire inflation pressure loss. An example method may include receiving first tire pressure data for a first tire of a vehicle at a first time. The example method may also include receiving second tire pressure data for the first tire at a second time. The example method may also include identifying a slow leak in the first tire based on a relationship between the first tire pressure data and the second tire pressure data. The example method may also include causing to send an alert to a user.